Huanglong and Jiuzhaigou bus.

I'm travelling to Jiuzhaigou in Sept.
I arrive in Jiuzhaigou airport at 8.40AM on 15th Sept, from Chengu by plane..
I have booked a hotel near Jiuzhaigou National Forest Park from 15/9/23 to 21/9/23.
I was thinking of taking a one hour public bus from airport to Huanglong on the day I arrive on 15/9/23.
I will spend a few hours seeing Huanglong Scenic Area.
I will then take the one hour public bus to Jiuzhaigou airport, so I can take another 2 hour public bus to the hotel near Jiuzhaigou National Park the same evening.

My question:
How frequent is the bus from Jiuzhaigou airport to HuangLong Scenic Park?
What is the last bus leaving HuangLong Scenic Park to the airport or direct to Jiuzhaigou National Park entrance?
What is the last bus from JiuzhaiGou airport to JiuZhaiGou National Park entrance.
I'm staying in a hotel near Holiday Inn Express in PengFeng Village, Zhangzha Town, Jiuzhaigou.
thanks, Swee